Portable self-contained electric lamp.



P. T. BAIRD. PORTABLE SELF CONTAINED ELECTRIC LAMP.

APPLIOATION FILED JUNE 11, 1913.

4 m mm W 'm w ma m2 P 1 7 m a k 329 l 1 3940 .30{ i Z l wit-macaw F. T. BAIRD. PORTABLE SELF CONTAINED ELECTRIC LAMP.

APPLICATION FILED JUNE11,1913.

1,088,1 20. Patented Feb. 24,1914.

2 SHEETS-SHEET 2.

awue ntz UNITED STATES FRANK T. BAIRD, OF BLUE ISLAND,

PORTABLE SELF-CON TA Specification of Application filed June 11,

To all "in/mm. it may concern:

Be it known that'I, FRANK T. Baum, a citizen of the United States, residing at Blue Island, in the county of Cool: and State of Illinois, have'invented certain new and useful Improvements in Portable Self- Contained Electric Lamps, of which the following is a specification.

The present invention relates to improvements in portable self contained electric lamps, and is designed especially for use in connection with railroads as a signal lamp to be carried in the hand or on the arm as is customary. The lamp may or course, however, be employed tor other uses by other persons, where su h an implement is required.

The ilrimary object of the invention is to improve the construction of this type of lamps to furnish a device simplein construction and facile in operation and manipulation, and at the same time efficient in performing the functions for which it is in-' tended.

The invention consists essentially in certain combinations and arrangements of parts of the lamp to provide for its assembly or detachment, and also in the cooperation of parts to illumine the lamp or extinguish the same, when desired. These and other features will be described hereinafter and more fully pointed out in the appended claims.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles of the invention.

Figure 1 is a side elevation of a complete PATENT ensign.

INED ELECTRIC LAMP.

Letters Patent.

Patented Feb. 24, 1914. 1913. Serial No. 773,072.

the bail connection and. a cam on the trunnion. Fig. 7 1s a'sect-ional detail view.

In the preferred embodiment of my miventiou, the barrel 1 is supported in the base 2 by means of a divided ring 3, and the ring is clamped on the barrel by means of the slotted cam plate 4 having-a pivot 5 at one end of the divided ring and a pin 6 passed through the slot '7 and fixed to the other end of the ring. In this manner, the barrel may be moved to adjusted position with relation to the base, and then by turning handle 8, the cam plate will clamp the ring about the barrel which is there heldby its frictional contact, and the barrel may be entirely detached with turning the plate and withdrawing the barrel from the open ring.

The barrel 1 is open at top and bottom, the top being closed by a lid or cover 9 which fits neatly over the barrel and may be secured thereon by means of the two bayonet slots 10, 10 and studs or pins 11, 11, as will he understood.

The lamp is equipped with a bail as usual, which is formed of sections 12, 12, 13 that are pivoted at 14-, and have overlapping ends that provide a friction lock to hold the bail extended. This construction of bail permits the lamp to be conveniently held in one hand, or rather on the arm, with the hand free, so that by bending the bail the lamp may be, held on the arm and the hand of that arm used, with the electric light 15 shining on the hand, or an article held in the hand.

The lamp 15 is adapted to project through the open end 16 of the rounded bottom 17 of the barrel, and a wire cage 18 may be fixed to the barrel to protect the bulb of the lamp. The battery for the lamp is made up of a lamp or lantern embodying the present invention. Fig. 2 is a sectional view of the barrel of the lamp, separated from its base, showing a battery of cells and the lamp connections or contact plates. Fig. 3 is a top plan view of Fig. 2 with the barrel lid or cover removed, showing the arms of the bail in section. Fig. 4 is a View of the battery supporting frame, detached therefrom and showing the base or disk .in section. Fig; 5

series of cells 19 fixed aboutthe core 20 and the whole inclosed with a pastcboard jacket 21. At its lower end the battery is provided with contact plates 22, 23, and the lamp is equipped with complementary plates 24, 25. The battery issupported within the barrel upon a frame comprising a diskor base 26 from which rises a pair of side arms 27, 27', integral with the base plate and arranged diametrically thereon at the edge.

is a sectional detail View of the joint beween the bail end'and one of. the barrel runnions showing also an actuating plate aith lugs thereo Fig. 6 is an enlarged s tional detail view of one of the trunnions,

The lamp 15 is secured to the underside of the base plate and the base plate is open at 27' and 28 so that the contact plates 24 and 25 may be passed therethrough.

The battery is secured to the frame by means of a pair of diametrically arranged rods or bolts 250 fixed to the plate 26 and projecting upwardly therefrom to the top of the battery. .\t their upper ends these rods are joined by a cr ss bar {ll having eyes 32. one of which is fitted in the eve 33 of the rod and the other eye is titled over a book 34 at the upper end of the rod 29. This construction of retaining rods permits the attachment and detachment of the battery to the frame with facility, as the battery may be detached by loosening the eye 32 from the hook- 34, the llOOlv'S ;J233 remaining joined as a hinge, then by throwing back the bar 31 the battery may be disengaged from its frame or holder.

The bail sections 12 are free to swing on their trunnions 35, and the trunnions themselves, are in turn free to turn in their bearings 36 of the barrel 1. The trunnions are rounded atand a. washer 36' is placed between the bearing 36 and the ba l end ]2, but next to the bail end the trunnion is squared as at 37, and its outer end is threaded as at 3 8 for a nut 39. The

squared portion 37 provides for a perforated crank plate 40 which is seated thereon and formed with a pair of integral lugs 41, 41 located at the sides of and below the center of the axis of the trunnion. Atits inner end the trunnion is projected through a. slot 42 in the upper end of the side arm 27 and an eccentric or cam plate 4;?) at the end of the trunnion is adapted to engage either of the cam guides 44 or 45, formed integral with the side arms near the to thereof, and by means of which the battery and its frame may be moved with relation to the inclosing casing or barrel 1, as will be described.

As shown most satisfactorily in Fig. 7 one of the side arms 27 has a plate attached thereto by means of the rivet 46 and slot 4.7, the plate being designated by the number 48 and approximately as wide as the side arm 27. At its upper end this plate is perforated and is passed over one of the trun nions so that it. will be understood that the plate is immovable with relation to the battery holder or frame. At its lower end the plate is bent with a foot 49 upon which an insulating block 50 is secured. The con tact plate. 2! is of elastic metal and in normal position is below the opening 27 in the disk 26, but it will be seen that when the battery and its holder are moved relatively to the barrel and plate 48 the con tact plate 2.4 will engage the insulated block 50 and be pressed thereby through the opening 27'. Thus when the battery and its holder are in raised position in the barrel, with the lamp extinguished, the plates 22 and 24 are out of contact and the circuit is broken. But when the battery and its holder with the lamp are in l ngered position, with the lamp projecting through opening 16 the lamp is ignited because of the Contact of plates 22 (Fig. 2) completing the lamp circuit. Thus when the lamp is projected from the barrel it is ignited. and when it is withdrawn into the barrel it is autonmtically extinguished.

The movement of the battery, its holder and lamp arc accomplishedby oscillation of the bail sections 12. In I -ig. a if the bail section is turned to the right for instance it engages a pin all which revolves the plate on the square part 37 of the trunnion. The trunnion is turned and the cam 43 with it and the cam engaging the face depresses he battery holder and lamp causing the contact plates to engage as described and projecting the ignited lamp from the barrel. The bail may now be turned to upright position. leaving the earn 43 in frictitmal contact with the cam edge to hold the parts in adju ted position. By swinging the bail section .to the left in. Fig. 5 the bail will engag e the pin 41 at the left and continued movement of the bail will revolve the trunnion in reverse dime-- tion until the cam plate 43 engages the cam face 44 to lift the batteev holding frame, break the contact and withdraw the lamp into the barrel as it is extinguished.

Having thus fully described my invention.

what I claim is:-

l. The combination with a lamp base in cluding a divided clamp ring, of a barrel. a slotted cam plate pivoted to one end of the ring and a pin on the other end of said ring engaged in the slotted plate as described.

2. The Combinat ion in a lamp with its barrel. of a bail, and means actuated by the bail for projecting the lamp from the barrel and igniting it.

3. The combination in an electric lamp with a barrel inclosing a battery frame and lamp, of a piv ted bail, and means actuated by said bail in its movement for projecting the lamp from the barrel and igniting the lamp. i

4. The combination with an eleetrc lamp barrel and its supporting trunnrnis a battery, supporting frame and lamp 1- in the barrel. and means actuated sa 4 t: Itnions in their movement for pro} ct g the lamp from the barrel and ite it' incon iv igniting the lamp.

5. The combinati n will: -n dectric m barrel and its supportin tfunnion+ a I tcry. supporting frame the barrel. and mean cf nions in their mo neui .ro'r igniting the lamp. and tor i extinguishing the lamp.

6. The combination Wlil a lamp barrel and battery supporting frame therein, of a trunnion supported in the barrel, a cam on the trunnion, and cam faces on the frame,

whereb the frame is moved relatively to the barrel, y said'trunnion in its movement.

7. The combination with a lamp barrel and battery supporting frame therein, of a trunnion supported in the barrel, a cam on e trunnion and cam faces on the frame, a

d actuating plate on the trunnion, and means for moving said plate, for the pur pose described.

8. The combination with a lamp barrel and batiery supporting frame therein, of a pair of trunnions supported in the barrel, a cam on each trunnion engaging complementary faces on the frame, afixed actuating plate on each trunnion, and a pivoted bail on the trunnions to engage said plate described.

9. The combinationwith a lamp barrel and battery supporting frame therein, of a pair of trunnions supported in the barrel, a cam on each trunnion, complementary faces on the frame, a fixed actuating plate on each trunnion having a pair of studs as described, and a bail pivoted on the trunnions adapted to engage said studs for the purpose set forth.

10. The combination with a lamp barrel of a movable battery supporting frame and lamp, means for moving th" frame, and means between the frame a1, barrel for completing an electric circuit to light the lamp.

1.1. The combination with a barrel of a movable frame, battery and lamp, and contact plates between said battery and lamp,

and means fixed to the barrel for bringing a pair of said plates into contact. as the frame is moved in a certain direction.

11 The cmnbination with a battery, of a frame including a base plate, a pair of rods secured to the plate at diametrically opposite points, a cross brace connecting said rods above the battery, a pair of supporting arms integral with the plate, and an inclosing casing.

In testimony whereof I afllx my signature in presence of two witnesses.

FRANK T. BAIRD. lvVitncsse/s:

GEO. J. ROLL, OTTO SORGENFOIL. 

